Home / 812,260.28-1,218,392.86-279,774.38

Finding the Fourth Proportional to 812,260.28, 1,218,392.86 and 279,774.38

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Solution

The fourth proportional to 812,260.28, 1,218,392.86 and 279,774.38 is: 419,662.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,260.28 : 1,218,392.86 = 279,774.38 : x
  2. Step 2: Convert to fraction form
    812,260.28/1,218,392.86 = 279,774.38/x
  3. Step 3: Cross multiply
    812,260.28x = 1,218,392.86 × 279,774.38
  4. Step 4: Simplify right side
    812,260.28x = 340,875,107,002.93
  5. Step 5: Solve for x
    x = 340,875,107,002.93/812,260.28
  6. Step 6: Final answer
    x = 419,662.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.